<?php
class CommentController extends Controller {
	/**
	 *
	 * @var string the default layout for the views. Defaults to '//layouts/column2', meaning
	 *      using two-column layout. See 'protected/views/layouts/column2.php'.
	 */
	public $layout = '//layouts/column2';
	
	/**
	 *
	 * @return array action filters
	 */
	public function filters() {
		return array (
				// perform access control for CRUD operations
				'accessControl' 
		);
	}
	
	/**
	 * Specifies the access control rules.
	 * This method is used by the 'accessControl' filter.
	 *
	 * @return array access control rules
	 */
	public function accessRules() {
		return array (
				array (
						'allow',  // allow all users to perform 'index' and 'view' actions
						'actions' => array (
								'index', 
								'view', 
								'ajaxNewCheck' 
						), 
						'users' => array (
								'*' 
						) 
				), 
				array (
						'allow',  // allow authenticated user to perform 'create' and 'update' actions
						'actions' => array (
								'create', 
								'update' 
						), 
						'users' => array (
								'@' 
						) 
				), 
				array (
						'allow',  // allow admin user to perform 'admin' and 'delete' actions
						'actions' => array (
								'admin', 
								'delete' 
						), 
						'users' => array (
								'admin' 
						) 
				), 
				array (
						'deny',  // deny all users
						'users' => array (
								'*' 
						) 
				) 
		);
	}
	public function actionAjaxNewCheck() {
		if (isset ( $_POST ['Comment'] ) && 'comment-form' === $_POST ['ajax']) {
			$comment = new Comment ();
			
			echo CActiveForm::validate ( $comment );
			Yii::app ()->end ();
		}
	}
	
	/**
	 * Displays a particular model.
	 *
	 * @param integer $id
	 *        	the ID of the model to be displayed
	 */
	public function actionView($id) {
		$this->render ( 'view', array (
				'model' => $this->loadModel ( $id ) 
		) );
	}
	
	/**
	 * Creates a new model.
	 * If creation is successful, the browser will be redirected to the 'view' page.
	 */
	public function actionCreate() {
		$model = new Comment ();
		
		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);
		
		if (isset ( $_POST ['Comment'] )) {
			$model->attributes = $_POST ['Comment'];
			if ($model->save ())
				$this->redirect ( array (
						'view', 
						'id' => $model->id 
				) );
		}
		
		$this->render ( 'create', array (
				'model' => $model 
		) );
	}
	
	/**
	 * Updates a particular model.
	 * If update is successful, the browser will be redirected to the 'view' page.
	 *
	 * @param integer $id
	 *        	the ID of the model to be updated
	 */
	public function actionUpdate($id) {
		$model = $this->loadModel ( $id );
		
		// Uncomment the following line if AJAX validation is needed
		// $this->performAjaxValidation($model);
		
		if (isset ( $_POST ['Comment'] )) {
			$model->attributes = $_POST ['Comment'];
			if ($model->save ())
				$this->redirect ( array (
						'view', 
						'id' => $model->id 
				) );
		}
		
		$this->render ( 'update', array (
				'model' => $model 
		) );
	}
	
	/**
	 * Deletes a particular model.
	 * If deletion is successful, the browser will be redirected to the 'admin' page.
	 *
	 * @param integer $id
	 *        	the ID of the model to be deleted
	 */
	public function actionDelete($id) {
		if (Yii::app ()->request->isPostRequest) {
			// we only allow deletion via POST request
			$this->loadModel ( $id )->delete ();
			
			// if AJAX request (triggered by deletion via admin grid view), we should not redirect the browser
			if (! isset ( $_GET ['ajax'] ))
				$this->redirect ( isset ( $_POST ['returnUrl'] ) ? $_POST ['returnUrl'] : array (
						'admin' 
				) );
		} else
			throw new CHttpException ( 400, 'Invalid request. Please do not repeat this request again.' );
	}
	
	/**
	 * Lists all models.
	 */
	public function actionIndex() {
		$dataProvider = new CActiveDataProvider ( 'Comment', array (
				'criteria' => array (
						'with' => 'post', 
						'order' => 't.status, t.create_time desc' 
				) 
		) );
		$this->render ( 'index', array (
				'dataProvider' => $dataProvider 
		) );
	}
	
	/**
	 * Manages all models.
	 */
	public function actionAdmin() {
		$model = new Comment ( 'search' );
		$model->unsetAttributes (); // clear any default values
		if (isset ( $_GET ['Comment'] ))
			$model->attributes = $_GET ['Comment'];
		
		$this->render ( 'admin', array (
				'model' => $model 
		) );
	}
	public function actionApprove() {
		if (Yii::app ()->request->isPostRequest) {
			$comment = $this->loadModel ();
			$comment->approve ();
			$this->redirect ( array (
					'index' 
			) );
		} else {
			throw new CHttpException ( 400, 'Invalid request.' );
		}
	}
	
	/**
	 * Returns the data model based on the primary key given in the GET variable.
	 * If the data model is not found, an HTTP exception will be raised.
	 *
	 * @param
	 *        	integer the ID of the model to be loaded
	 */
	public function loadModel($id = false) {
		if (false === $id) {
			$id = intval ( $_REQUEST ['id'] );
		}
		$model = Comment::model ()->findByPk ( $id );
		if ($model === null)
			throw new CHttpException ( 404, 'The requested page does not exist.' );
		return $model;
	}
	
	/**
	 * Performs the AJAX validation.
	 *
	 * @param
	 *        	CModel the model to be validated
	 */
	protected function performAjaxValidation($model) {
		if (isset ( $_POST ['ajax'] ) && $_POST ['ajax'] === 'comment-form') {
			echo CActiveForm::validate ( $model );
			Yii::app ()->end ();
		}
	}
}
